From 18edbe6519bd5b738bf410b23f437df3005526e3 Mon Sep 17 00:00:00 2001
From: Richard Levitte <levitte@openssl.org>
Date: Fri, 9 Dec 2016 23:32:09 +0100
Subject: [PATCH] VMS UI_OpenSSL: if the TT device isn't a tty, flag instead of
 error

On all platforms, if the controlling tty isn't an actual tty, this is
flagged by setting is_a_tty to zero...  except on VMS, where this was
treated as an error.  Change this to behave like the other platforms.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2063)
---
 crypto/ui/ui_openssl.c | 48 ++++++++++++++++++++++++------------------
 1 file changed, 28 insertions(+), 20 deletions(-)

diff --git a/crypto/ui/ui_openssl.c b/crypto/ui/ui_openssl.c
index f15b6c454b..90e39a21f7 100644
--- a/crypto/ui/ui_openssl.c
+++ b/crypto/ui/ui_openssl.c
@@ -450,13 +450,17 @@ static int open_console(UI *ui)
 #endif
 #ifdef OPENSSL_SYS_VMS
     status = sys$assign(&terminal, &channel, 0, 0);
+
+    /* if there isn't a TT device, something is very wrong */
     if (status != SS$_NORMAL)
         return 0;
-    status =
-        sys$qiow(0, channel, IO$_SENSEMODE, &iosb, 0, 0, tty_orig, 12, 0, 0,
-                 0, 0);
+
+    status = sys$qiow(0, channel, IO$_SENSEMODE, &iosb, 0, 0, tty_orig, 12,
+                      0, 0, 0, 0);
+
+    /* If IO$_SENSEMODE doesn't work, this is not a terminal device */
     if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
-        return 0;
+        is_a_tty = 0;
 #endif
     return 1;
 }
@@ -473,14 +477,15 @@ static int noecho_console(UI *ui)
         return 0;
 #endif
 #ifdef OPENSSL_SYS_VMS
-    tty_new[0] = tty_orig[0];
-    tty_new[1] = tty_orig[1] | TT$M_NOECHO;
-    tty_new[2] = tty_orig[2];
-    status =
-        sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12, 0, 0, 0,
-                 0);
-    if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
-        return 0;
+    if (is_a_tty) {
+        tty_new[0] = tty_orig[0];
+        tty_new[1] = tty_orig[1] | TT$M_NOECHO;
+        tty_new[2] = tty_orig[2];
+        status = sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12,
+                          0, 0, 0, 0);
+        if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
+            return 0;
+    }
 #endif
 #if defined(_WIN32) && !defined(_WIN32_WCE)
     if (is_a_tty) {
@@ -504,14 +509,15 @@ static int echo_console(UI *ui)
         return 0;
 #endif
 #ifdef OPENSSL_SYS_VMS
-    tty_new[0] = tty_orig[0];
-    tty_new[1] = tty_orig[1] & ~TT$M_NOECHO;
-    tty_new[2] = tty_orig[2];
-    status =
-        sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12, 0, 0, 0,
-                 0);
-    if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
-        return 0;
+    if (is_a_tty) {
+        tty_new[0] = tty_orig[0];
+        tty_new[1] = tty_orig[1] & ~TT$M_NOECHO;
+        tty_new[2] = tty_orig[2];
+        status = sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12,
+                          0, 0, 0, 0);
+        if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
+            return 0;
+    }
 #endif
 #if defined(_WIN32) && !defined(_WIN32_WCE)
     if (is_a_tty) {
@@ -531,6 +537,8 @@ static int close_console(UI *ui)
         fclose(tty_out);
 #ifdef OPENSSL_SYS_VMS
     status = sys$dassgn(channel);
+    if (status != SS$_NORMAL)
+        return 0;
 #endif
     CRYPTO_THREAD_unlock(ui->lock);